The material property and electron emission for NEA GaN vacuum electron source

2021 ◽  
Author(s):  
Jianliang Qiao ◽  
Yuan Cao ◽  
Shengzhao Wang ◽  
Yunfeng Wang
Keyword(s):  
Material Property ◽  
Electron Emission ◽  
Electron Source

Multi-scale simulation of electron emission from a triode-type electron source with a carbon-nanotube column array cathode

2013 ◽  
Vol 24 (46) ◽  
pp. 465303 ◽  
Author(s):  
Joel Becker ◽  
Nguyen Tuan Hong ◽  
Jean-Jacques Berthelier ◽  
Francois Leblanc ◽  
Soonil Lee ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electron Emission ◽  
Electron Source ◽  
Multi Scale

Characteristics of a cold cathode electron source combined with secondary electron emission in a FED

2005 ◽  
Vol 251 (1-4) ◽  
pp. 170-176 ◽  
Author(s):  
Wei Lei ◽  
Xiaobing Zhang ◽  
Xuedong Zhou ◽  
Zuoya Zhu ◽  
Chaogang Lou ◽  
...  
Keyword(s):  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
Electron Source ◽  
Cold Cathode

scholarly journals Influence of electron emission on operation of a constricted arc discharge in a pulsed forevacuum plasma-cathode electron source

2021 ◽  
Vol 2064 (1) ◽  
pp. 012124
Author(s):  
A V Kazakov ◽  
E M Oks ◽  
N A Panchenko
Keyword(s):  
Electron Beam ◽  
Electron Emission ◽  
Arc Discharge ◽  
Electron Source ◽  
Operating Voltage ◽  
Large Radius ◽  
Plasma Cathode ◽  
Discharge System ◽  
Arc Voltage ◽  
Minimum Value

Abstract The research of influence of electron emission and processes associated with the formation of a pulsed large-radius electron beam on operation of a constricted arc discharge, which forms emission plasma in a forevacuum plasma-cathode electron source, is presented. Processes, occurring in case of generation of the electron beam at forevacuum pressure range 3–20 Pa, provide lower operating voltage of the constricted arc discharge. The constricted arc voltage decreases with increasing pressure and increasing accelerating voltage. However, at pressure more than 15 Pa, the arc voltage decreases until a certain minimum value is reached, and then arc voltage is almost independent on pressure and accelerating voltage. This minimum value of the constricted arc voltage is on average 1.5–2 times higher as compared with voltage of the cathodic arc at the same discharge current. The observed decrease of operating voltage of the constricted arc is most likely caused by accelerated back-streaming ions, which move toward the emission electrode from beam-produced plasma. These accelerated ions partially penetrate into the hollow anode of discharge system through the mesh emission electrode and facilitate formation of the arc plasma, and thus provides lower voltage of the constricted arc.

A novel vacuum electron source based on ballistic electron emission

1997 ◽  
Vol 111 ◽  
pp. 165-169 ◽  
Author(s):  
E.G. Borgonjen ◽  
G.P.E.M. van Bakel ◽  
C.W. Hagen ◽  
P. Kruit
Keyword(s):  
Electron Emission ◽  
Electron Source ◽  
Ballistic Electron

Technology of Ferroelectric Electron Emission

2010 ◽  
Vol 148-149 ◽  
pp. 1286-1290
Author(s):  
Qiu Ping Wang ◽  
Yu Jun Feng ◽  
Zhuo Xu ◽  
Han Chen Liu
Keyword(s):  
Current Density ◽  
Electron Emission ◽  
High Current Density ◽  
Electron Source ◽  
Emission Current ◽  
High Current ◽  
Ferroelectric Cathode

Electron emission from ferroelectric cathodes is commonly suggested as an electron source for different application due to its special characteristics such as high current density, easy treatment and operation, etc. The technology of (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) ferroelectric cathode is introduced in this paper. Stable emission current is obtained from the PMN-PT ferroelectric cathode and the characteristic of ferroelectric electron emission is deal with as well.

Sign in / Sign up

Export Citation Format

Share Document